Wireless communication system, wireless communication device and wireless communication method, and computer program

Abstract

An information transmission source forms a transmission packet at a predetermined time unit into which a preamble is inserted and transmits it. The information reception target returns an acknowledge (ACK) packet or a not acknowledge (NACK) packet into which a preamble is inserted. A hidden terminal recognizes that the transmission path is used for data retransmission from when the NACK is received to when the next ACK is received to avoid collisions. Further, when there is transmission data at the information transmission source specified by a beacon signal, it is recognized that the transmission path is used until the next ACK is received. For example, in an ultra wide band communication method, access control is executed while avoiding collisions of communication communications and a retransmission control is executed.

Description

TECHNICAL FIELD [0001] This invention relates to a wireless communication system, a wireless communication apparatus, a wireless communication method, and a computer program, for mutual communication among a plurality of wireless stations, and particularly to a wireless communication system, a wireless communication apparatus, a wireless communication method, and a computer program, for effecting access control with avoiding collisions of communication and a retransmission control. [0002] More specifically, the present invention relates to a wireless communication system, a wireless communication apparatus, a wireless communication method, and a computer program, for access control with avoiding collisions of communication and a retransmission control in the ultra-wide band communication system and particularly to a wireless communication system, a wireless communication apparatus, a wireless communication method, and a computer program, for providing an access control with avoiding...

AI Technical Summary

Benefits of technology

[0019] The object of the present invention is to provide a superior wireless communication system, a wireless communication apparatus, a wireless communication me

Problems solved by technology

This case requires wiring constructions, which makes it difficult to simply construct a network and makes works for laying cables troublesome.

Further, after the construction of a LAN, the length of the cable connected to a device limits the movable range.

In this channel shared system, communication requests randomly done from the terminals may cause collisions of signals from a plurality of terminal stations (i.e., transmission at the same time interval).

Thus, there is a problem that it is difficult that the access control method on the basis of the CSMA/CA using the reception electric field intensity information (RSSI) cannot be adopted as it is.

This makes the control complicated.

Further, in such a wireless commu

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